With the rapid evolution of the Industry 4.0 model, device networking becomes more and more important. Countless machines need to be connected to the network, which has driven the market of industrial Ethernet up. According to the latest results of the annual survey of the industrial IoT market by HMS of Swedish Industrial Networks Ltd., the Industrial Ethernet installation node for factory automation in 2017 exceeded the traditional fieldbus for the first time.
Data shows that the number of installed industrial Ethernet nodes increased from 46% of market share in 2016 to 52% in 2017, while fieldbus dropped from 48% to 42%. Among them, EtherNet/IP is currently the most widely installed industrial Ethernet, its market share accounts for 15%, followed by PROFINET and PROFIBUS accounted for 12%, wireless technology maintained at 6% of the market.
The intelligent transformation of the manufacturing industry requires high-performance networks to support the integration of industrial IoT solutions and plant equipment to promote the use of industrial Ethernet. For a long time in the past, industrial Ethernet was in a transitional phase. Now, from the point of view of the number of installed nodes, the industrial IoT has replaced fieldbus.
According to the HMS report, although the proportion of field buses in the market was lost to Industrial Ethernet, the number of fieldbus installations in 2017 increased, and its growth rate increased from 4% in 2016 to 6%, indicating that the industrial network market has The stage of rapid development. However, network vendors expect the number of fieldbus installations to decline steadily over the next few years.
In 2017, the number of industrial wireless communication installation nodes increased by 32% compared with 2016. Wireless technology has been expanding in the past two years, but its market share is relatively small, maintaining a market share of 6%. Among them, WLAN is currently the most popular wireless technology, followed by Bluetooth. Wireless communication technology can reduce cabling and facilitate device connectivity and control. It is increasingly being used by machine builders and system integrators to implement innovative solutions, including solutions for connection monitoring via tablet PCs or smartphones.
The analysis found that Profinet and EtherNet/IP are the main network protocols in Europe and the Middle East. Profibus is widely used, and its networks including EtherCat, ModbusTCP, and EthernetPowerlink are also popular. The U.S. market is obviously developing towards EtherNet/IP. In the Asian market, Profinet, EtherNet/IP, Profibus, EtherCat, Modbus and CC-link are widely used.
Why manufacturers favor Industrial Ethernet?
Industrial Ethernet is actually Ethernet used in the industry. Due to the harsh on-site environment, equipment connections often require more robust connectors, cables, and the most important certainty. In order to achieve better certainty, Industrial Ethernet uses a special protocol. The more popular industrial Ethernet protocols are PROFINET, EtherNet/IP, EtherCAT, and POWERlink.
Industrial Ethernet typically has data transmission rates ranging from 10 Mbit/s to 1 Gb/s, of which 100 Mbit/s is the most popular speed in industrial Ethernet applications. Industrial Ethernet requires some additional considerations, not the Ethernet system used in the office. For example, the user needs to monitor in real time over the network the different temperatures, vibrations, noises, and other parameters of the production equipment in the factory.
Industrial Ethernet protocols such as PROFINET and EtherCAT are modified from the traditional Ethernet standards to not only ensure the correct transmission and reception of manufacturing device data, but also to send and receive instructions on time when the system needs to perform certain operations. For example, in the automated filling production process, filling data is sent via the network to ensure that the bottle filling is performed as expected, an automated report is generated in real time, and when the bottle is full, an order to stop the filling is issued on the network.
If data loss or delay between devices in an industrial environment can cause disasters, the real-time nature and certainty of industrial Ethernet networks are very important. The industrial environment must ensure real-time awareness of the state of automated production processes and enable the completion of plant process requirements in harsh environments.
Edge Automation and IIoT Opportunities
With the advent of deterministic industrial Ethernet protocols and zero-fault redundancy protocols, some industry suppliers have proposed the development of sensors based on Industrial Ethernet EtherNet/IP connections, but others have stated that they do not need to use Ethernet-enabled sensors because IO The -link, HART, or WirelessHART can connect the sensor and enter the Industrial Ethernet via the conversion device. Some process industry suppliers have developed a potential new standard for connecting sensors to Industrial Ethernet via fieldbus connections.
In the past, many people in the automation industry insisted that Industrial Ethernet would not extend to sensors, instrumentation, and inspection equipment. However, today's industry 4.0 era has come. The Internet of Things solution has further advanced the intelligent development of edge devices. Industrial Ethernet terminal devices, including sensors and I/O drivers, will play a key role in future connectivity business strategies. In order to expand the analysis capabilities of the device, Industrial Ethernet must be extended to the last device in the automation chain: sensors and I/O.
Device managers want to use plant-level information to make business decisions to a greater degree, so they turn their attention to intelligent products like sensors and I/O. The ability to import data into cloud applications further promotes the need for end devices with large data throughput and Ethernet support that exceeds the capabilities of most dedicated traditional automation networks.
Industrial Ethernet equipment meets the needs of IIoT and Industry 4.0, such as reducing machine downtime and production flexibility. Industrial Ethernet and wireless will become the main driving force for these goals.
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